Smoke detector battery interface



FIG. 1 is a front perspective view of a smoke detector battery interface showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view showing the smoke detector battery interface in the context it is intended to be used.

The dashed lines form no part of the claimed design. 

The ornamental design for a smoke detector battery interface, as shown and described. 